Claimed to be a survey from BBC Research but I have my doubts on both counts. I suspect the "survey" is just a superficial excuse for a sales pitch. And earlier this year there were some scammers making calls falsely claiming to be from BBC Research (a real survey company).
Called and answer machine picked up - message started asking questions about recreation, etc... "do you play golf..." Finally hung up when my answering machine didn't give them any answers.